Nach Auswahl und Fällen eines Baumes beim Dorf Mayongo und der Geschenkübergabe an den Holzschnitzer tritt kurz eine Gruppe Jugendlicher mit einer Grasmaske auf. Dem Aushöhlen und Zurichten der Maske mit Wange, Schnabel und "Hörnern" folgt die Verzierung mit Erdfarben und Brandmalerei. Nach dem Flechten einer Halskrause und der Herstellung eines Bastkleides Vorführung der Maske.

The procedure begins with circling round the chosen tree, followed by its felling; then come the handing over of gifts to the sculptor, and the marking and cutting to length of the section of tree trunk reserved for the mask. In the meanwhile, a group of young men has appeared with a grass mask. Then the block of wood is hollowed out to provide room for the bearer of the mask's head, the cheeks and beak are carved, and a slit is pierced for the eyes. Holes are burned into the neck-edge with the glowing end of a spear. Once the "horns" are made, the mask is painted and the neck collar knotted. Ears and eyes are also fitted on. Finally, a mask-dress is made with strips of bast, and the finishing touch consists in sewing the collar on to the neck-part of the mask. Right at the end, one of the two sculptors slips the mask on and makes a short appearance.